Significance and Use
These tests are useful for specification and control purposes during the manufacture, purchase, and use of the magnet-wire enamels, and for determining uniformity of batches.
1. Scope
1.1 These test methods cover testing liquid enamel coatings used to produce film-insulated magnet wire.
1.2 The values stated in either lbs/gal or SI units are to be regarded separately as standard.
1.3 The test methods appear as follows:
| Sections |
| Density | 6-10 |
| Determined Solids | 16-22 |
| Effective Solids | 31-37 |
| Flash Point | 11-15 |
| Infrared Analysis | 42-47 |
| Stack Loss | 23-30 |
| Viscosity | 38-41 |
1.4 There is no known IEC equivalent document.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D29 Test Methods for Sampling and Testing Lac Resins
D56 Test Method for Flash Point by Tag Closed Cup Tester
D476 Classification for Dry Pigmentary Titanium Dioxide Products
D1298 Test Method for Density, Relative Density (Specific Gravity), or API Gravity of Crude Petroleum and Liquid Petroleum Products by Hydrometer Method
D1475 Test Method For Density of Liquid Coatings, Inks, and Related Products
D1638 Methods of Testing Urethane Foam Isocyanate Raw Materials3
D1711 Terminology Relating to Electrical Insulation
D5423 Specification for Forced-Convection Laboratory Ovens for Evaluation of Electrical Insulation
E131 Terminology Relating to Molecular Spectroscopy
E168 Practices for General Techniques of Infrared Quantitative Analysis
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
Index Terms
density; determined solids; effective solids; enamels-magnet wire; evaporative solids; flash point; infrared spectroscopy; magnet wire enamels; simulated stack loss; stack loss; viscosity; Determined solids; Effective solids; Enamel coatings; Enamels–magnet wire; Infrared (IR) analysis; Magnet wire--film-insulated; Solids content; Stack loss;
ICS Code
ICS Number Code 25.220.50 (Enamels)
DOI: 10.1520/D3288_D3288M-08
ASTM International is a member of CrossRef.
Citing ASTM Standards
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